21226816

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:879

約数の個数: 56

約数和(自身を含む): 46882304

約数和(自身を除く): 25655488

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 208, 248, 403, 416, 496, 806, 823, 832, 992, 1612, 1646, 1984, 3224, 3292, 6448, 6584, 10699, 12896, 13168, 21398, 25513, 25792, 26336, 42796, 51026, 52672, 85592, 102052, 171184, 204104, 331669, 342368, 408208, 663338, 684736, 816416, 1326676, 1632832, 2653352, 5306704, 10613408, 21226816]

約数ペア:

[(1, 21226816), (2, 10613408), (4, 5306704), (8, 2653352), (13, 1632832), (16, 1326676), (26, 816416), (31, 684736), (32, 663338), (52, 408208), (62, 342368), (64, 331669), (104, 204104), (124, 171184), (208, 102052), (248, 85592), (403, 52672), (416, 51026), (496, 42796), (806, 26336), (823, 25792), (832, 25513), (992, 21398), (1612, 13168), (1646, 12896), (1984, 10699), (3224, 6584), (3292, 6448)]